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freebsdFreeBSDB70B880F-5727-11EA-A2F3-001CC0382B2F
HistoryOct 25, 2019 - 12:00 a.m.

Mbed TLS -- Side channel attack on ECDSA

2019-10-2500:00:00
vuxml.freebsd.org
14

CVSS2

1.9

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:M/Au:N/C:P/I:N/A:N

CVSS3

4.7

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS

0.001

Percentile

19.8%

JSON

Janos Follath reports:

Our bignum implementation is not constant time/constant trace, so
side channel attacks can retrieve the blinded value, factor it (as
it is smaller than RSA keys and not guaranteed to have only large
prime factors), and then, by brute force, recover the key.

OSVersionArchitecturePackageVersionFilename
FreeBSDanynoarchmbedtls< 2.16.4UNKNOWN

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CVSS2

1.9

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:M/Au:N/C:P/I:N/A:N

CVSS3

4.7

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS

0.001

Percentile

19.8%

JSON
Related for B70B880F-5727-11EA-A2F3-001CC0382B2F
nessus4cve1fedora2alpinelinux1cvelist1osv2openvas4veracode1ubuntucve1prion1archlinux1debiancve1nvd1mageia1debian1